When wrong programs opens a file in Windows-8 / 10 / 8.1, please start the Windows 8 Explorer!
Use for example the keyboard shortcut [Windows Logo] + [E] and select the file. Via right click open the context menu [... see Image 1 Arrow-1].
Choose Open with [... see Image 1 Arrow-2] and Choose default program ... [... see Image 1 Arrow-3].
Please check the mark in the checkbox "Use this app for all *.??? files" [... see Image 1 Arrow-4]. Choose default program or app for this file type [... see Image 1 Arrow-4].
If not, click or tap More options [... see Image 1 Arrow-5] and Look for another app on this PC [... see Image 1 Arrow-7] or Look for an app in the Store
FAQ 71: Updated on: June 24th 2015 14:16